Valve Clearance: Inspection

WARNING: This page is about a different car, the 2018 Nissan NV3500 HD, 2018 Nissan NV2500 HD, and 2018 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Perform the following inspection after removal, installation or replacement of camshaft or valve-related parts, or if there are unusual engine conditions due to changes in valve clearance over time (starting, idling, and/or noise).

Remove the air cleaner and air duct assembly. Refer to Exploded View .
Remove rocker covers (RH/LH banks). Refer to Removal and Installation .

Measure the valve clearance as follows:

Set No. 1 cylinder at TDC of its compression stroke.

Rotate crankshaft pulley clockwise to align timing mark (A) (grooved line without color) with timing indicator (B).

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Make sure that intake and exhaust cam noses on No. 1 cylinder (engine front side of RH bank) are located as shown, below.

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If not, rotate crankshaft one revolution (360°) and align as shown, above.

Use feeler gauge, measure the clearance between valve lifter and camshaft.

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Unit: mm (in)

Valve Clearance

Cold ¹ (reference data)		Hot ² (reference data)
Intake	0.26 - 0.34 (0.010 - 0.013)	0.304 - 0.416 (0.012 - 0.016)
Exhaust	0.29 - 0.37 (0.011 - 0.015)	0.308 - 0.432 (0.012 - 0.017)

¹ : Approximately 20°C (68°F)

² : Approximately 80°C (176°F)

Measure the valve clearances at locations marked "X" as shown in the table below (locations indicated in the illustration) with feeler gauge.

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No. 1 cylinder at compression TDC

Measuring position (RH bank)		No. 1 CYL.	No. 3 CYL.	No. 5 CYL.
No. 1 cylinder at compression TDC	EXH	X
	INT	X
Measuring position (LH bank)		No. 2 CYL.	No. 4 CYL.	No. 6 CYL.
No. 1 cylinder at compression TDC	INT	X
	EXH	X

Rotate crankshaft by 240° clockwise (when viewed from engine front) to align No. 3 cylinder at TDC of its compression stroke.

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NOTE: Crankshaft pulley bolt flange has a stamped line every 60°. They can be used as a guide to rotation angle.

Measure the valve clearances at locations marked "X" as shown in the table below (locations indicated in the illustration) with feeler gauge.

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No. 3 cylinder at compression TDC

Measuring position (RH bank)		No. 1 CYL.	No. 3 CYL.	No. 5 CYL.
No. 3 cylinder at compression TDC	EXH	X
	INT	X
Measuring position (LH bank)		No. 2 CYL.	No. 4 CYL.	No. 6 CYL.
No. 3 cylinder at compression TDC	INT	X
	EXH	X

Rotate crankshaft by 240° clockwise (when viewed from engine front) to align No. 5 cylinder at TDC of compression stroke.

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Measure the valve clearances at locations marked "X" as shown in the table below (locations indicated in the illustration) with feeler gauge.

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No. 5 cylinder at compression TDC

Measuring position (RH bank)		No. 1 CYL.	No. 3 CYL.	No. 5 CYL.
No. 5 cylinder at compression TDC	EXH	X
	INT	X
Measuring position (LH bank)		No. 2 CYL.	No. 4 CYL.	No. 6 CYL.
No. 5 cylinder at compression TDC	INT	X
	EXH	X

For the measured value out of the standard, perform adjustment.